I watched a couple of nights ago when it dropped - it was super-endearing. I agreed with so much of what the comedians at the end said - Norm had a mind like nobody else, and a style that had you so invested.
One of the only things I didn't love about the end review was Letterman (who I usually enjoy) mentioning over and over that it would have been better in front of a crowd. Sure, maybe - but this was far more poignant. This was a man near the end, getting something off his chest the night before surgery "just in case." And just KILLING the delivery in one take - a take that was adorably filled with a barking dog, a ringing phone, and him not quite getting the hang of filming himself. It was sweet and sad and poignant.